GFP-labeled motor neurons and interneurons in the spinal cord.

(A) In a coronal section of the spinal cord with prominent infiltration of GFP-labeled bone marrow-derived cells (green), a number of GFP-labeled interneurons were detected. (B) Magnification of the area indicated with a box in (A). Eight GFP-labeled interneurons (green, indicated by arrows) located in the grey matter (GM), and one motor neuron (arrowhead) extending an axon/dendrites across the white matter (WM). (C) Most of these cells co-label with NeuN (indicated by arrowheads). (D) Schematic illustration of GFP-labeled interneuron and their dendrites. Scale bar (A-D) 150 μm.